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1、Unit3UnderstandingeachotherGrammarandusageUnrealconditionalsstateaconditionorsituationthatisnotrealorisimaginary.Unrealconditionals虚拟语气虚拟语气用来陈述一个不真实或者想象的情况。Weuseunrealconditionalstostateapresentconditionorsituationthatisnotrealorisimaginary.IfIgotmarriedinU
2、K,Iwouldexpectapresent.2)IcouldreachthebookifIwereabittaller.3)IfIhadthechance,Imightwanttobeatranslator.我们用虚拟语气陈述现在不真实或想象的情景。Weformunrealpresentconditionalslikethis:If…was/were/did…,…would/could/mightdo…1.假如现在我有更多的时间，我就会学习德语。IfIhadmoretimenow，IwouldstudyGe
3、rman.2.要是我象你一样年轻,我就会找时间锻炼。IfIwere/wasyoungasyou,Iwouldfindtimetoexercise.Practice:Would,couldandmightareofteninterchangeable,butwithsomedifferenceinmeaning.would→intention;plancould→ability;possibilitymight→probability2)InwrittenEnglishorinformalsituation,w
4、eusuallyusewereinIf-clausesinplaceofwas.However,ineverydayconversation,wasisoftenused.TIPWealsouseunrealconditionalstorefertoanimaginarypastaction.1)Ifyouhadjoinedthechatroomtenminutesago,youwouldhaveknownwhatweweretalkingabout.2)Ifthemanhadpointedwithhisfi
5、rstfingerwhilehewasinBrunei,everyonewouldhavethoughtthathewasveryrude.我们用虚拟语气表示想象中发生在过去的动作。Weformunrealpastconditionalslikethis:If…hadbeen/done…,…would/could/mighthavedone…1)如果他抓紧时间，他本来能赶上那趟火车。Ifhehadhurried,hecouldhavecaughtthetrain.2)如果你昨天告诉他，他也许会提些建议了。If
6、youhadtoldhimyesterday,hemighthavemadesomesuggestions.Weuseunrealfutureconditionalstotalkaboutimaginaryfuturesituations.1)IfIhadtimetomorrow,Iwouldcertainlyhelpyou.2)IfIweretofailmyMathstest,Iwouldhavetotakeitagainattheendoftheterm.3)Ifheshouldcometomorrow,
7、Iwouldtalktohimaboutit.我们用虚拟语气表示想象中发生在将来的情景。Weformunrealfutureconditionalslikethis:If…was/were/did/should/wereto…,…would/should/mightdo…1)假如我要出国，我就会去法国。IfIweretogoabroad,IwouldgotoFrance.2)万一明天下雨，我们的郊游就推迟。Ifitshouldraintomorrow,ourpicnicwouldbeputoff.Wecana
8、lsoputshould,wereandhadatthebeginningofanunrealconditionalsentence.Inthiscase,ifisnotneededanymore.Ifyoushouldmakeamistake,youshouldnotbeembarrassed.→Shouldyoumakeamistake,youshouldnotbeembarrassed.2)I
